ASTM D6662-07
(Specification)Standard Specification for Polyolefin-Based Plastic Lumber Decking Boards
Standard Specification for Polyolefin-Based Plastic Lumber Decking Boards
ABSTRACT
This specification covers polyolefin-based plastic lumber products for use as exterior residential decking boards. Plastic lumber products are currently made predominantly with recycled polyolefin plastics (in particular high-density polyethylene) where the products are more or less non-homogenous in the cross-section. However, this specification is also potentially applicable to similar manufactured plastic products made from other plastic and plastic composite materials that have non-homogenous cross-sections. Performance requirements to which the products should adhere to are flexural properties (allowable flexural stress, and effective modulus of elasticity and adjustment for creep), dimensional stability during thermal expansion, weatherability (surface appearance and flexural property changes, and hygrothermal cycling), fire properties, and slip resistance. Also detailed here is a procedure to calculate recommended span lengths for spacing of support joists.
SCOPE
1.1 This specification covers polyolefin-based plastic lumber products for use as exterior residential decking boards.
1.2 Plastic lumber products are currently made predominantly with recycled polyolefin plastics (in particular high-density polyethylene) where the products are more or less non-homogenous in the cross-section. However, this specification is also potentially applicable to similar manufactured plastic products made from other plastic and plastic composite materials that have non-homogenous cross-sections.
1.3 This specification details a procedure to calculate recommended span lengths for spacing of support joists. This procedure was developed using experimental data from a typical unreinforced plastic lumber made predominantly from recycled high-density polyethylene. The methodology to develop span lengths for other types and compositions of plastic lumber is detailed in Appendix X1 of this standard.
1.4 The values are stated in inch-pound units, as these are currently the most common units used by the construction industry. Equivalent SI units are indicated in parentheses. However, the units stated for irradiance exposure in the weatherability section (6.3) are in SI units as these are the units commonly used for testing of this type.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.Note 1
There is no similar or equivalent ISO Standard.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D 6662 – 07
Standard Specification for
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Polyolefin-Based Plastic Lumber Decking Boards
This standard is issued under the fixed designation D6662; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
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1. Scope 2.2 ASTM Standards:
D883 Terminology Relating to Plastics
1.1 This specification covers polyolefin-based plastic lum-
D2565 Practice for Xenon-Arc Exposure of Plastics In-
ber products for use as exterior residential decking boards.
tended for Outdoor Applications
1.2 Plastic lumber products are currently made predomi-
D2915 Practice for Evaluating Allowable Properties for
nantly with recycled polyolefin plastics (in particular high-
Grades of Structural Lumber
density polyethylene) where the products are more or less
D4329 Practice for Fluorescent UV Exposure of Plastics
non-homogenous in the cross-section. However, this specifica-
D5033 Guide for Development ofASTM Standards Relat-
tion is also potentially applicable to similar manufactured
ing to Recycling and Use of Recycled Plastics
plastic products made from other plastic and plastic composite
D6109 Test Methods for Flexural Properties of Unrein-
materials that have non-homogenous cross-sections.
forced and Reinforced Plastic Lumber and Related Prod-
1.3 This specification details a procedure to calculate rec-
ucts
ommended span lengths for spacing of support joists. This
D6112 Test Methods for Compressive and Flexural Creep
procedure was developed using experimental data from a
and Creep-Rupture of Plastic Lumber and Shapes
typical unreinforced plastic lumber made predominantly from
D6341 Test Method for Determination of the Linear Coef-
recycled high-density polyethylene. The methodology to de-
ficientofThermalExpansionofPlasticLumberandPlastic
velop span lengths for other types and compositions of plastic
LumberShapesBetween−30and140°F[−34.4and60°C]
lumber is detailed in Appendix X1 of this standard.
E84 Test Method for Surface Burning Characteristics of
1.4 The values are stated in inch-pound units, as these are
Building Materials
currently the most common units used by the construction
E108 Test Methods for Fire Tests of Roof Coverings
industry. Equivalent SI units are indicated in parentheses.
G151 Practice for Exposing Nonmetallic Materials in Ac-
However, the units stated for irradiance exposure in the
celerated Test Devices that Use Laboratory Light Sources
weatherabilitysection(6.3)areinSIunitsasthesearetheunits
G154 Practice for Operating Fluorescent Light Apparatus
commonly used for testing of this type.
for UV Exposure of Nonmetallic Materials
1.5 This standard does not purport to address all of the
G155 Practice for Operating Xenon Arc Light Apparatus
safety concerns, if any, associated with its use. It is the
for Exposure of Non-Metallic Materials
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
3. Terminology
bility of regulatory limitations prior to use.
3.1 Definitions:
NOTE 1—There is no similar or equivalent ISO Standard.
3.1.1 plastic lumber, n—a manufactured product composed
ofmorethan50weightpercentresin,andinwhichtheproduct
2. Referenced Documents
generally is rectangular in cross-section and typically supplied
2.1 The following documents of the issue in effect on the
in sizes that correspond to traditional lumber board and
dateofmaterialpurchaseformapartofthisspecificationtothe
dimensionallumbersizes,maybefilledorunfilled,andmaybe
extent referenced herein:
composed of single or commingled resins.
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This specification is under the jurisdiction of ASTM Committee D20 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
PlasticsandisthedirectresponsibilityofSubcommitteeD20.20onPlasticProducts. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Sept. 1, 2007. Published September 2007. Originally Standards volume information, refer to the standard’s Document Summary page on
approved in 2001. Last previous edition approved in 2006 as D6662-06. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D6662–07
3.1.2 resin, n—a solid or pseudo solid organic material 5. Dimensions and Permissible Variations
often of high molecular weight, which exhibits a tendency to
It is permissible to produce decking boards either in sizes
flow when subjected to stress, usually has a softening or
that are similar to the standard dimensions of the wood
melting ra
...
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